Coffee making apparatus



July 6, 1937. H. D. GORDON ET AL 2,086,127

- -COFFEE MAKING APPARATUS Filed Sept. 12, 1936 IN V EN TOR3 Harr 0.Gordon P 6/ Pappas BY Z114; 7W ATTORNEYS.

Patented July 6, 1937 UNITED STATES PATENT OFFICE COFFEE MAKINGAPPARATUS Harry D. Gordon and Peter Pappas, New Haven, Conn.

Application September 12, 1936, Serial No. 100,518

3 Claims. (01. 53-3) This invention relates to improvements in cofieemaking apparatus, and particularly to apparatus for use in restaurantsor where large quantities of coiIee are made, and which includes meansfor heating water and means for drawing the water from the heater anddistributing it into the coffee making mechanism.

The object of the invention is to provide improved means for maintainingheat in the coffee making device.

The invention consists in the construction as hereinafter described, andparticularly described in the claims.

In the accompanying drawing:

Fig. 1 is a front view of the coffee making machine constructed inaccordance with our intentions;

Fig. 2 is a vertical, sectional view of the same;

Fig. 3 is a sectional view on the line 33 of Fig. 2.

In carrying out our invention we employ a water boiler 5 having avertical flue 6 open at the bottom and open at the top for connectionwith a chimney or other ventilating means.

Within the boiler, around the flue, is a cylindrical wall I, forming awater jacket 8, and below the boiler is a heater 9, of any desiredcharacter. On either side of the boiler are urns II], in each of whichis a percolator l l, supporting a coffee container l2, and each closedat the top by a cover l3, the top of the boiler also being closed by acover M which surrounds the upper end of the flue B. As in the usualconstruction of devices of this character, siphon tubes l5, l6 extendfrom near the bottom of the boiler upward and outward to sprinklers l1and I8, the passages thereto being adaptably opened or closed by valvesl9 and 20. The water is furnished to the boiler by a pipe 2|, the flowof water being controlled by a valve 22.

Within the flue are two coils, 23 and 24, one within the other, theupper end of the coil 23 extending into the jacket 8 and extendingtherefrom across to the upper end of the urn l0 into which itdischarges, and the bottom of the urn I0 is connected by a pipe 25 withthe water jacket, and the water jacket with the lower end 26 of the coil23. Valves 2! and 28 control the circuit of water through the coils andthrough the urn.

On the other side, the upper end of the coil 24 extends into the otherurn and connection is made with the lower end of this urn with the lowerend of the coil 24, these connections being controlled by valves 29 and30. The siphon l5 and the connection 25 are united by a pipe 3| providedwith a valve 32 by which it may be operated or closed.

The operation of this device is practically the same so far as thecirculation of water is concerned, but by providing the two coilsdirectly 5 above the burner, the water is more rapidly heated and can bemaintained at a higher temperature than where the heat afiects only thelower part of the boiler. We thusprovide in a simple manner a veryefficacious device for making coffee and 10 maintaining it at thedesired temperature.

We claim:

1. A coffee making apparatus including: a vertically-arranged tubularboiler and a coffee urn, said boiler provided with a vertically-arrangedl5 flue extending upward through the boiler and open at both ends; acylindrical wall inside the boiler and around the flue, and forming awaterjacket; a coil arranged in said flue and having its endscommunicating with the urn, a percolator 20 mounted in the urn; asiphon-tube in the boiler and extended into the top of the urn, abovethe percolator; and a burner belowrthe lower end of the flue. Y

2. A coffee making apparatus including: a ver- 25 tically-arrangedtubular boiler and an urn, said boiler provided with avertically-arranged flue extending upward through the boiler and open atboth ends; a cylindrical wall inside the boiler and around the flue, andforming a Water-jacket; 30 a coil arranged in said flue and having itsends communicating with the urn, a percolator mounted in the urn; asiphon-tube in the boiler and extended into the top of the urn, abovethe percolator; said siphon-tube also connected with the 30 lower end ofthe water-jacket; and a burner below the lower end of the flue.

3. In a coiiee making apparatus, the comb-ination with a boiler and aplurality of urns, said boiler provided with a flue extending upwardthrough the boiler and open at both ends; of a cylindrical wall, insidethe boiler and around the flue, and forming a Water-jacket; two coils,one arranged Within the other in said flue, the ends of one coilcommunicating with one of the urns, and the ends of the other coilcommunicating. with the other urn; a percolator mounted in each urn;siphon-tubes in the boiler, one extending into the top of one urn abovethe percolator therein, and the other extending into the top of theother 50 um above the percolator therein; and a burner below said coils.I

HARRY D. GORDON. PETER PAPPAS.

